Advisory ID: cisco-sa-20060419-wlse
For Public Release 2006 April 19 15:00 UTC (GMT)
There are two vulnerabilities that exist in the CiscoWorks Wireless LAN
Solution Engine (WLSE). The first is a cross site scripting (XSS) vulnerability
that may allow an attacker to gain administrative privileges on the system. The
second is a local privilege escalation vulnerability that can be used by an
attacker who already has authenticated access to the command line interface to
obtain access to the underlying operating system.
Cisco has made free software available to
address this vulnerability for affected customers.
This advisory is available at
This section provides details on affected products.
A CiscoWorks Wireless LAN Solution Engine (WLSE) or WLSE Express
running any version of software prior to 2.13 are vulnerable to both of these
Several other Cisco products are affected only by the local privilege
escalation vulnerability, including Cisco Hosting Solution Engine (HSE), User
Registration Tool (URT), Cisco Ethernet Subscriber Solution Engine (ESSE) and
CiscoWorks2000 Service Management Solution. A separate Cisco Security Response
has been published regarding the impact and the fixes on these products and can
be found at
No other Cisco products are affected by both of these
CiscoWorks WLSE is a centralized, systems-level application for
managing and controlling an entire autonomous Cisco WLAN infrastructure.
Two vulnerabilities exist in the WLSE appliance that may allow an
attacker to gain complete control of the device or to obtain access to the
underlying operating system.
These issues are documented by the following Cisco bug IDs:
customers only) - Cross site scripting vulnerability in WLSE appliance web
This fix addresses the cross site scripting (XSS) vulnerability in
the WLSE appliance web user interface. By exploiting this vulnerability, an
attacker may obtain the session cookie information and further use this
information to gain administrative privileges on the system.
customers only) - Privilege escalation to Linux shell
This fix addresses the local privilege escalation from the command
line interface of the WLSE appliance. By exploiting this vulnerability an
attacker who already has authenticated access to the command line interface may
inject a command to obtain a shell account on the underlying operating
Cisco has provided scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0.
CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response.
Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks.
Cisco has provided an FAQ to answer additional questions regarding CVSS at
Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at
By exploiting these vulnerabilities together, an attacker may obtain
complete control of the WLSE appliance.
When considering software upgrades, also consult
and any subsequent advisories to determine exposure and a complete upgrade
In all cases, customers should exercise caution to be certain the
devices to be upgraded contain sufficient memory and that current hardware and
software configurations will continue to be supported properly by the new
release. If the information is not clear, contact the Cisco Technical
Assistance Center ("TAC") or your contracted maintenance provider for
These vulnerabilities are fixed in the 2.13 version of WLSE software.
Fixed software can be downloaded from the following URL:
There are no workarounds for these vulnerabilities.
Cisco will make free software available to address this vulnerability
for affected customers. This advisory will be updated as fixed software becomes
available. Prior to deploying software, customers should consult their
maintenance provider or check the software for feature set compatibility and
known issues specific to their environment.
Customers may only install and expect support for the feature sets they
have purchased. By installing, downloading, accessing or otherwise using such
software upgrades, customers agree to be bound by the terms of Cisco's software
license terms found at
, or as otherwise set forth at Cisco.com Downloads at
Do not contact either "email@example.com" or "firstname.lastname@example.org"
for software upgrades.
Customers with contracts should obtain upgraded software through their
regular update channels. For most customers, this means that upgrades should be
obtained through the Software Center on Cisco's worldwide website at
Customers whose Cisco products are provided or maintained through prior
or existing agreement with third-party support organizations such as Cisco
Partners, authorized resellers, or service providers should contact that
support organization for guidance and assistance with the appropriate course of
action in regards to this advisory.
The effectiveness of any workaround or fix is dependent on specific
customer situations such as product mix, network topology, traffic behavior,
and organizational mission. Due to the variety of affected products and
releases, customers should consult with their service provider or support
organization to ensure any applied workaround or fix is the most appropriate
for use in the intended network before it is deployed.
Customers who purchase direct from Cisco but who do not hold a Cisco
service contract and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain software patches and bug fixes by contacting the Cisco Technical Assistance Center (TAC). TAC
contacts are as follows.
+1 800 553 2447 (toll free from within North America)
+1 408 526 7209 (toll call from anywhere in the world)
Have your product serial number available and provide the URL of this notice as evidence of entitlement to a software patch or bug fix. Customers without service contracts should request a software patch or bug fix through the TAC.
Refer to http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
for additional TAC contact information, including special localized telephone
numbers and instructions and e-mail addresses for use in various
The Cisco PSIRT is not aware of malicious use of the vulnerability
described in this advisory.
This vulnerability was reported to Cisco by Adam Pointon of
Assurance.Com.Au. We would like to thank Adam Pointon for bringing this to our
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors.
This advisory is posted on Cisco's worldwide website at :
In addition to worldwide web posting, a text version of this notice is
clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail
and Usenet news recipients.
Future updates of this advisory, if any, will be placed on Cisco's
worldwide website, but may or may not be actively announced on mailing lists or
newsgroups. Users concerned about this problem are encouraged to check the
above URL for any updates.
Initial public release.